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PPP street lighting in Germany

PPP street lighting in Germany

PPP street lighting in Germany

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Light emitt<strong>in</strong>g diode (LED)<br />

• Short development-cycles and cont<strong>in</strong>uous improvement of energy-efficiency<br />

• Close to become a mature and cost-effective technology<br />

• The <strong>in</strong>stallation of LED’s offers huge sav<strong>in</strong>g potentials for energy and CO 2 -emissions<br />

• Some municipalities have already <strong>in</strong>stalled test-projects to collect reference data<br />

• Investment costs are still high and the lifecycle is still unpredictable as suppliers don’t<br />

guarantee the lifetime LED’s<br />

• Currently there is still uncerta<strong>in</strong>ty about<br />

• Lifetime of 40.000 - 50.000h<br />

• O&M costs, energy-consumption<br />

• Possible effect of dimm<strong>in</strong>g, temperature and environment on life-time<br />

• Major political <strong>in</strong>terest to develop and implement LED technology<br />

5

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